# Copyright 1999-2005 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

GNATSOURCE="${WORKDIR}/gnat-${PV}-src"

inherit gnatbuild flag-o-matic

DESCRIPTION="GNAT Ada Compiler - gcc version"
HOMEPAGE="http://gcc.gnu.org/"
LICENSE="GMGPL"

SRC_URI="ftp://gcc.gnu.org/pub/gcc/old-releases/gcc-2/gcc-${GCCVER}.tar.bz2
	http://gd.tuwien.ac.at/languages/ada/gnat/${PV}/gnat-${PV}-src.tgz
	http://gd.tuwien.ac.at/languages/ada/gnat/${PV}/gnat-${PV}-unx-docs.tar.gz
	x86?   ( http://dev.gentoo.org/~george/src/gnatboot-3.15-i686.tar.bz2 )
	amd64? ( http://dev.gentoo.org/~george/src/gnatboot-3.4-amd64.tar.bz2 )"
# ${GNATBRANCH} and ${GCCVER} are defined in gnatbuild.eclass and depend 
# only on $PV, so should be safe to use in DEPEND/SRC_URI

KEYWORDS="~x86"

CFLAGS="-O2"
CXXFLAGS=${CFLAGS}

src_unpack() {
	gnatbuild_src_unpack base_unpack

	# prep gcc sources for Ada
	cd "${S}"
	patch -p0 < "${GNATSOURCE}/src/gcc-281.dif"
	mv "${GNATSOURCE}/src/ada" "${S}"
	epatch "${FILESDIR}/${P}-gentoo.patch.bz2"
	epatch "${FILESDIR}/${P}-noaddr2line.patch.bz2"
	sed -i -e "s:-laddr2line::g" ada/Makefile.in
	epatch "${FILESDIR}/${P}-nptl.patch"

	gnatbuild_src_unpack common_prep

	touch cstamp-h.in
	touch ada/treeprs.ads ada/a-[es]info.h ada/nmake.ad[bs]

	# Make sure we don't overwrite the existing gcc
	sed -i -e "s/\$(bindir)\/gcov/\$(bindir)\/gnatgcov/" "${S}/Makefile"
	sed -i -e "s/alias)-gcc/alias)-gnatgcc/g" "${S}/Makefile"
			
	# this one needs to match the bootstrap compiler
#	cp -f "${GNATSOURCE}/lib/adainclude/system.ads" "${S}/ada"
	# add -fPIC flag to shared libs
#	cd ${S}/ada
#	if [ "${ARCH}" = "amd64" -o "${ARCH}" = "x86" ]; then
#		patch Make-lang.in < ${FILESDIR}/${PN}-Make-lang.in.patch
#	fi
#	sed -i -e "s:-gnatpg:-gnatg:" Make-lang.in
}

src_compile() {
	gnatbuild_src_compile configure 

	# we need to setup environment here too, it is not inherited from within a
	# function
	export PATH="${GNATBOOT}/bin:${PATH}"
	GNATLIB="${GNATBOOT}/lib/gcc-lib/${CTARGET}/${SLOT}"
	export CC="${GNATBOOT}/bin/gnatgcc"
	local ADA_OBJECTS_PATH="${GNATLIB}/adalib"
	local ADA_INCLUDE_PATH="${GNATLIB}/adainclude"

	cd "${GNATBUILD}"
	emake -j1 LANGUAGES="c ada gcov" -I"${GNATBOOT}/include" ||
		die "initial compilation failed"

	emake LANGUAGES="c ada gcov" bootstrap || 
		die "bootstrap failed"

#	einfo "Building gnattools"
#	make CC="gcc" CFLAGS="${CFLAGS}" gnattools ||
#		die "Failed to build gnattools!"

	einfo "building gnatlib_and_tools"
	emake -j1 gnatlib_and_tools || 
		die "gnatlib_and_tools failed"

	einfo "building shared lib"
	rm -f gcc/ada/rts/*.{o,ali} || die
	# otherwise make tries to reuse already compiled (without -fPIC) objs..
	emake -j1 gnatlib-shared LIBRARY_VERSION="${GCCBRANCH}" || 
		die "gnatlib-shared failed"
#	gnatbuild_src_compile gnatlib_and_tools gnatlib-shared
}

src_install() {
#	PATH="${GNATBOOT}/bin:${PATH}"
#	GNATLIB="${GNATBOOT}/lib/gcc-lib/${CTARGET}/${SLOT}"
#	local LDFLAGS="-L${GNATBOOT}/lib/gcc-lib/i686-pc-linux-gnu/2.8.1"
#	export CC="${GNATBOOT}/bin/gnatgcc"
#	local ADA_OBJECTS_PATH="${GNATLIB}/adalib"
#	local ADA_INCLUDE_PATH="${GNATLIB}/adainclude"

	# Install gnatgcc, tools and native threads library
	cd "${GNATBUILD}"
	make DESTDIR=${D} prefix="${D}/usr" \
		bindir="${D}${BINPATH}" \
		libdir="${D}${LIBPATH}" \
		libexecdir="${D}/${LIBEXECPATH}" \
		includedir="${D}/${LIBPATH}/include" \
		mandir="${D}/${DATAPATH}/man" \
		infodir="${D}/${DATAPATH}/info" \
		LANGUAGES="c ada gcov" GCC_INSTALL_NAME=gnatgcc \
		install ||
#		install-common install-libgcc install-gnatlib install-driver ||
			die "Failed while installing GNAT"
	
}